In the following essay, Levenson traces the development of Heart of Darkness, maintaining that “it is clear that Conrad markedly altered his conception” of the story as he was writing it.

Although the point has been strangely neglected, it is clear that Conrad markedly altered his conception of Heart of Darkness during the period of its composition. His act of writing was at the same time a discovery of his subject. This issue possesses independent interest, but it will be pursued here as a way of approaching a problem in the interpretation of the...